Protect your family from the silent killer
★★★★★
4.8 from 2,127 families
Not right for your home? Return it within 100 nights for a full refund.
It doesn’t wait until the air is dangerous. You see the number rise from zero — and act before a late alarm becomes the first sign of trouble.
Your alarm is built to stay silent until it’s almost too late.
Carbon monoxide harms the body long before a standard alarm reacts — and it can legally wait hours to sound. That’s why seeing the live number matters.
The detector with a display.
Plug it in, see the live number, and know at a glance that you’re safe — or act fast if you’re not.
See CO from 0 PPM — not a yes/no light
Watch the live number climb long before an old alarm would beep.
Plugs in anywhere in 30 seconds
Any standard outlet. No ladder, tools or electrician — one per floor.
Won’t false-alarm when you cook
Reads carbon monoxide and gas — never smoke or steam.
4 sensors in one device
CO, gas, humidity and temperature together. Most detectors catch only one.
100-night risk-free trial
Not right for you? Full refund, return shipping covered — plus a lifetime warranty.
You can’t see it. You can’t smell it. And it doesn’t hurt.
CO leaks from furnaces, water heaters and stoves — and a dead sensor keeps glowing green anyway.
No color, no smell, no warning — and a standard alarm can stay silent until it’s already dangerous.
Real families. Real protection.
What’s included +
- ✓ 2 HavenGuard Detector™ detectors
- ✓ Free US shipping
- ✓ 100-night money-back trial
- ✓ Lifetime warranty
What’s included +
- ✓ 4 HavenGuard Detector™ detectors
- ★ Free placement guide
- ✓ Free US shipping
- ✓ 100-night money-back trial
- ✓ Lifetime warranty
What’s included +
- ✓ 8 HavenGuard Detector™ detectors
- ★ Free placement guide
- ✓ Free US shipping
- ✓ 100-night money-back trial
- ✓ Lifetime warranty
Not right for your home? Return it within 100 nights for a full refund.
Got Questions? We got you covered!
How is this different from the detector I already own? ×
Your current alarm can stay silent until CO is already high. AirGuard shows the actual number from 0 PPM, so you see a problem building while it is still just a problem.
Where do I put it? What height? +
Plug it into a standard wall outlet near sleeping areas, each floor, and your main fuel-burning appliance. No ladder, drilling, or electrician required.
How many do I need? +
Simple rule: one per floor, one near every sleeping area, and one near your main gas appliance. Apartments often do fine with 2; homes usually need 4.
Will it false-alarm when I cook? +
No. It reads carbon monoxide and gas — not smoke or steam — so cooking and showers should not trigger nuisance alarms.
Does it still need my certified alarm? +
AirGuard is designed as an early-warning display. Always follow local code and keep certified CO alarms installed as required.
What if it is not right for my home? +
You can update this answer in Shopify admin with your exact return policy, guarantee, and support details.
Real questions. Real people.
Can someone vouch for this? My wife is pregnant so I’m not taking any chances with our gas furnace.
Works awesome. Ordered the 4-pack after a water heater scare. One per floor plus hallway outside bedrooms.
We have a gas stove and I’ve been paranoid. Does this actually show the low levels you can’t smell?
Yep. Reads 2–6 PPM when burners are going and drops back to 0 after turning the hood on. Eye-opening.
Bought one for my mother-in-law. Plugged in instantly and the display is easy for her to read.
HVAC tech here. Saw one of these in a customer’s basement last month, didn’t think much of it. Two days later it caught a back-drafting flue on a tankless water heater. Now I recommend them on every gas appliance job.
Anyone with the 8-pack got a placement diagram for a 2-story + basement? Where do you put #5 through 8
I’m 68 and the big green number is the reason I bought it. Can read it from across the room even without my glasses. Whoever designed this with seniors in mind, thank you.
The live readout literally caught a problem last week. 19 ppm on the one near the mudroom. Realized I’d left the car idling in the attached garage longer than I thought. A regular detector wouldn’t have made a sound. This one showed me a problem I created.
If you burn anything, this is for you.
Parents
Peace of mind in every room your kids sleep in.
Gas-heat homes
Furnace, water heater or stove? You have a CO source.
Aging parents
A number they can read to you over the phone.
Renters
Plugs in, no install, comes with you when you move.
RVs & cabins
Generator and propane risk, wherever you are.
Protect your family tonight
Know what’s in the air your family breathes. See the number. Every day, in every room that matters.
Shop HavenGuard Detector™ — 50% off